A by-election was held for the Lagos seat in the Legislative Council of Nigeria in 1940. It followed the death of incumbent Olayinka Alakija, who had been a member of the Nigerian Youth Movement (NYM).[1] Jibril Martin of the NYM was elected with 64% of the vote.
Martin and Samuel Akisanya both sought the NYM nomination,[2] with Martin chosen as the party's candidate. His opponent was Crispin Adeniyi-Jones, a doctor who had been a member of the Legislative Council from 1923 until losing his seat in the 1938 elections.[1]
| Candidate | Party | Votes | % |
|---|---|---|---|
| Jibril Martin | Nigerian Youth Movement | 505 | 64.41 |
| Crispin Adeniyi-Jones | Nigerian National Democratic Party | 279 | 35.59 |
| align=left colspan=2 | Invalid/blank votes | − | |
| align=left colspan=2 | Total | 784 | 100 |
| align=left colspan=2 | Registered voters/turnout | ||
| align=left colspan=4 | Source: Tamuno |